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Katalog Online Perpustakaan Universitas Ma Chung Villa Puncak Tidar N-01 Malang - Jawa Timur.
DDC v.22
Klasifikasi & Katalogisasi DDC versi 22
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| Title | Composition of Photosynthetic Pigments in Red Alga Kappaphycus Alvarezi Cultivated at Different Depths |
| Edition | |
| Call Number | |
| ISBN/ISSN | |
| Author(s) | Tatas H.P. Brotosudarmo Leenawaty Limantara Heriyanto Indriatmoko |
| Subject(s) | Seaweeds HPLC Pigments Red Algae chromatography analysis |
| Classification | |
| Series Title | GMD | Prosiding Ilmiah Internasional |
| Language | English |
| Publisher | MRCPP |
| Publishing Year | 2014 |
| Publishing Place | Malang |
| Collation | |
| Abstract/Notes | The red alga Kappaphycus alvarezii has been introduced and mono cultivated in Indonesia as a seaweed commodity. This species is specifically grown in shallow and clear seawater, although there are several reports concerning the cultivation in deep seawater. It is interesting to know compositional changes of chlorophylls and carotenoids when K. alvarezii is grown at different depths. We, therefore, cultivated K. alvarezii green and brown variants at about 0.2-m (normal grown condition), 1-m, and 2-m depths and successfully obtained different ratios of chlorophyll and carotenoid composition at different depths. Quantitative analyses of chlorophylls to carotenoids ratio were carried out using data of chromatogram peak area. We subsequently evaluated the photo- and thermo-stability of the pigment extracts to examine the effects of pigment composition on the degradation rate of the pigments. The photo-stability assay was conducted under 1417 µmol photons m-2•s-1 approximately for 45 min and recorded using a Spectrophotometer MultiSpec-1501 (Shimadzu, Kyoto, Japan). Thermo-stability assay was performed using a water bath at 90°C for 10, 20, 30, 60, 90, and 120 min and measured by Spectrophotometer UV-1700 (Shimadzu). This investigation is aimed to provide information regarding compositional change of the pigments by acclimation in terms of cultivation depths and pigment stability at condition of natural pigment composition in this alga |
| Specific Detail Info | Humbolt Kolleg II in Conjuction with The 2nd International Conference on Natural Sciences (ICONS) 2014, Malang, 25-28, September 2014 |
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